-H option causes unneccessary transfers

Kevin Korb kmk at sanitarium.net
Mon Mar 28 12:11:07 UTC 2016


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

What does --itemize-changes say about these files?

Also, what is --atimes?  Is this the Apple modified rsync for OSX?

On 03/28/2016 07:51 AM, Albert Berger wrote:
> Greetings,
> 
> when the daily system backup with rsync is performed, thousands of
> files (e.g. from /usr directory), which are not modified are
> uselessly transferrred to the backup storage every day. The rsync
> command is the following:
> 
> rsync --update -DHAErlptgo --relative --atimes --delete-during
> ${SRCPATH} ${BACKUPDIR}
> 
> Quick investigation shown, that these files are hard links, and the
> command option related to this behaviour is -H: without it the
> unmodified files are not copied. Seemingly this situation is
> described in the rsync manual:
> 
> "If  incremental recursion is active (see --recursive), rsync may
> transfer a missing hard-linked file before it finds that another
> link for that contents  exists  else‐ where  in  the  hierarchy....
> One way to avoid this inefficiency  is  to  disable incremental
> recursion  using the --no-inc-recursive option."
> 
> Adding --no-inc-recursive to the aforementioned command line
> doesn't help (are --recursive and --no-inc-recursive supposed to be
> used in one option set?). And I use --recursive to copy entire 
> directory tree, including subdirectories. Could someone advise
> please how one can prevent copying unmodified hard-linked files?
> 
> Thanks, A. Berger.
> 

- -- 
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
	Kevin Korb			Phone:    (407) 252-6853
	Systems Administrator		Internet:
	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
	Orlando, Florida		kmk at sanitarium.net (personal)
	Web page:			http://www.sanitarium.net/
	PGP public key available on web site.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2

iEYEARECAAYFAlb5H1sACgkQVKC1jlbQAQe0LwCg0yhgY81WywKO4NYioxCfbF3J
qVcAn2P9hJiW9pXwMZutAmuOjIvdvvNZ
=/Enu
-----END PGP SIGNATURE-----



More information about the rsync mailing list